1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Deffense [45]
3 years ago
12

What describes the change in oxidation states of the following reaction

Chemistry
1 answer:
miskamm [114]3 years ago
7 0
Cu  ions  reduced to  cu  and Al  oxidized to  Al  ions  is  the  answer.  copper   ions is right hand  side  of  the  E.M.F  cell  where  reduction  take  place  and is  reduced  to  copper  metal. Al   metal is  at left hand  side  of  the  E.m.f  cell where oxidation  take  place and  is  oxidized  to  Al  ions
You might be interested in
Hydrogen gas and fluorine gas will react to form hydrogen fluoride gas. What is the standard free energy change for this reactio
Marta_Voda [28]

Answer:

\Delta G=-541.4kJ/mol

Explanation:

Hello there!

In this case, according to the given information, it turns out firstly necessary to write out the described chemical reaction as shown below:

H_2+F_2\rightarrow 2HF

Now, we set up the expression for the calculation of the standard free energy change, considering the free energy of formation of each species, specially those of H2 and F2 which are both 0 because they are pure elements:

\Delta G=2\Delta G_f^{HF}-(\Delta G_f^{H_2}+\Delta G_f^{F_2})\\\\\Delta G=2*-270.70kJ/mol-(0kJ/mol+0kJ/mol)\\\\\Delta G=-541.4kJ/mol

Regards!

4 0
3 years ago
Be<br><br> Name the element.<br><br> Number of shells?<br><br> Valence electrons?
Vedmedyk [2.9K]

Answer:

Name the element: Beryllium

Number of shells:  4

Valence electrons: 2

Explanation:

4 0
3 years ago
Which ions aren't shown in net ionic reactions, because they are present as both reactants and products of the reaction, so they
Anvisha [2.4K]

Explanation:

This is correct!

Ions that exist in both the reactant and product side of the equation are referred to as spectator ions. Overall, they do not partake in the reaction. If they are present on both sides of the equation, you can cancel them out.

An example is;

Na+(aq) + Cl​−​​(aq) + Ag​+(aq) + NO​3​−​​(aq) → Na​+​​(aq) + NO​3​−​​(aq) + AgCl(s)

The ions; Na+, NO​3​−​​(aq) would be cancelled out to give;

Cl​−​​(aq) + Ag​+(aq)  → AgCl(s)

7 0
3 years ago
The image below shows how wolves and dogs compare to some other animals in the levels of classification. An image of classificat
scZoUnD [109]

Answer:  They belong to the same kingdom but different phyla.

Explanation:

6 0
3 years ago
The atomic mass of gold is 197 g/mole, and the density of gold is 19.3 g/cm3. using this information along with the measured val
olganol [36]
The speed of sound is given by the formula
Speed of sound = square root (Young's Modulus/density)
Young's modulus for gold = 78 GPa which is 7.8 * 10^10 Pa
Speed of sound = (7.8 * 10^10 / 19.3 ) = sqrt (4.04 * 10^9 )
Speed of sound = 6.36 * 10^4 m/s <<<=== answer.
6 0
3 years ago
Other questions:
  • A buffer is prepared by adding 100 mL of 0.50 M sodium hydroxide to 100 mL of 0.75 M propanoic acid. Is this a buffer solution,
    9·1 answer
  • Milk of magnesia has the chemical formula Mg(OH)2. What is the mass of 3.2 moles of milk of magnesia? The molar Mass of magnesiu
    5·1 answer
  • How does every singles cell in the body get the substances it needs to carry out the chemical reaction that provides it with ene
    15·2 answers
  • BRAINLIEST
    6·1 answer
  • Predict which of the following metals reacts with hydrochloric acid.
    8·1 answer
  • Calculate the molar solubility of PbBr2 (Ksp = 4.67x10-6) in 0.10M NaBr solution.
    9·2 answers
  • Which of the following statements best describes a difference between mechanical waves and electromagnetic waves?
    11·1 answer
  • What is the molarity of a solution prepared by dissolving 10.0g of kno3 in 250 ml of solution
    10·1 answer
  • The formation of nitrogen dioxide and oxygen,
    10·1 answer
  • 40 g of sodium reacts with ____ g of chlorine to produce 117 g of sodium chloride *
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!